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vCARIJGNTHER7 OF BERIJIN,\PRUSSIA, ASSIGNOR TO FREDERICK VOLKMAN, OFHOBOKEN, NEW JERSEY.

Letters Patent No. 90,7 40, dated June 1, 1869.

The Schedule referred to in these Letters Patent and making part of thesame.

To all `whom. it may concern Be it knowuthat I, CARL GNTHER, of Berlin,Province of Brandenburg, and Kingdom of Prussia, have invented a new andimproved Methody of Coloring Threads, Fabrics, Ste.; and I do herebydeclare that the following is a full, clear, and exact descriptionthereof, which will enable others skilled in the art Ato make and usethe same, reference beinghad to the accompanying drawings, forming partof this specification.

The figures in the drawing represent face views of fabrics, showing theapplication of my improved threads.

This invention relates tothe production of improved threads from whichornamented fabrics may be woven 5 and It consists in covering thethreads with metal foil, to imitate gold and silver, las will behereinafter more fully described.

It has been a subject of considerable research, to detect a means ofcovering threads with metal, in such a manner that the same will notwear-off, and not destroy or injure the flexibilityY of the threads.

By my improvement, thc threads are left as Hexible as they were before,and they can be folded or woven without breaking or injuring themetallic Ycovering. l

In carrying out my invention, I apply a primary coat y of coloredvarnish to the threads, in single, double, or treble layers.

For gold foil, this varnish is mixed with yellow ocre, or otherequivalent coloring-matter, while for silver foil, white lead, or itsequivalent, is mixed with the varnish.

l prefer to mix the varnish with a small'quantity of copal, whereby itis made elastic, and caused to dry quickly and thoroughly.

The varnish, mixed, as ain'esaid,witl1 the coloringmattei', is, when ithas about the consistency of paste, applied to the thread, by means of abrush, or other mechanism.

'lhefoil is then `placed upon the thread, and when the varnish .isquite, or nearly dry, is brushed, to remove those parts that do notadhere closely.

.'llireads, thus treated, can be used on the loom', to be interwoven inother fabrics, or they may bel used for sewing, to produce brilliantstitches.

The metal adheres so i'irnily that -it will not be worn off by themanipulation to which the threads are exposed, during such weaving orsewing-process.

One of the principal advantages of my improved threads is, that they canbe readily washed, without injuring the foil.

Having thus described my invention,

Yhat I claim as new, and desire to secure by Letters Patent, is-

As new articles of manufacture, flexible threads, covered with metalfoil, in imitation of gold and silver threads, as herein described, forthe purpose specified.

The above specification of my invention signed by me, this 4th day oi'November, 1868.

CARL GNTHER.

Witnesses y H. KREISMANX, c G. YOUNG.

